package io;

import java.io.*;

/**
 * Java把流分为两类
 */
public class CopyDemo3 {
    public static void main(String[] args) throws IOException {

        FileInputStream fis=new FileInputStream("image.png");
        BufferedInputStream bis=new BufferedInputStream(fis);

        FileOutputStream fos=new FileOutputStream("image4.png");
        BufferedOutputStream bos=new BufferedOutputStream(fos);
        long start=System.currentTimeMillis();
        int d;
        while ((d=bis.read())!=-1){
            bos.write(d);
        }

        long end=System.currentTimeMillis();
        System.out.println("复制完毕,用时"+(end-start)+"ms");
        bis.close();
        bos.close();

    }
}
